Accessories
Nexus Digital Setting Circles Pro
with Ultra Res 32K encoders
The Nexus Pro Digital Telescope Computer (DTC) brings not only accurate positioning information to your telescope but also provides an enormous detailed database of tens of thousands of celestial objects. Stars, asterisms, galaxies, globular clusters, open clusters, planetary nebula, nebula, planets, asteroids, comets, earth-orbiting satellites and more.
Magnitudes, surface brightnesses, object sizes, common names, stellar classifications, stellar luminosity classes, double star separations, Hubble galaxy morphologies, constellation, detailed parameters of planets, comets, asteroids, satellites and a wealth of other information is available at your fingertips with a simple spin of the dial.
$895
installed
Ultra Res 32K resolution encoders
With mounting hardware / wiring harness only installed (you have computer already)
Ultra res 32K encoders standard with all Nexus Pro orders. Already have an Obsession scope? Swap out your old 8K or 10K encoders with ultra res 32000 count encoders. More than three times the resolution for improved targeting and tracking.
$450
Focusers
Choose from four great focusers. The JMI EV3 comes standard on all Classic Obsessions. Or upgrade to the EV1, or EV1 with motofocus, or the awesome Feathertouch by Starlight Instruments. (Feathertouch comes standard on all UCs)
-
Feathertouch
by Starlight Instruments
$550 Upgrade
(standard on all UCs) -
JMI EV3
Comes standard on
all Classic Obsessions -
JMI EV1
$249 Upgrade
-
JMI EV1 with Motofocus
$349 Upgrade
Paracorr
$550 (Highly recommended at f/4)
The Tele Vue Paracorr is a popular optical device called a coma corrector. It fixes an optical flaw called coma in fast Newtonian and Dobsonian telescopes. Coma makes stars near the edge of your view look like little comets instead of sharp points.
Ethos eyepieces by Televue
6mm, 8mm, 13mm, 17mm, and 21mm
These amazing eyepieces have a 100 degree apparent field of view. You might have to turn your head to see from one side to the other as your eyeball can't move that far!
We are often asked "What eyepieces should I use"? TeleVue eyepieces are simply the best for fast reflecting telescopes like the Obsession.
We are also a Televue dealer and offer OEM discount pricing on all eyepieces, filters, barlows and more.
Contact us for price and delivery info.
-
6mm
-
8mm
-
13mm
-
17mm
-
21mm
Finders
-
Telrad
with Quick Release Platform
$45
More details here -
9 x 50 finderscope
with amici prism and quick release finder rings installed
$299 -
13 x 80 finderscope
with amici prism and quick release finder rings installed
$399
Barlow-Laser Collimator 2" barrel
Highly recommended. Includes 2" magnetic barlow lens and removable mask for the new barlowed laser collimating technique. Great visual aid, and no better way to accurately align fast Newtonians. Has recessed switch.
Dew heater for secondary mirror
Secondary mirror heating system automatically senses the air temperature and the mirror temperature, then maintains the secondary at a preset (adjustable) temperature above the ambient air temperature. Gently warms the secondary at 2-4 watts when on full. Six evenly spaced contact points for optimal thermal distribution. Uses a 9v battery (smoke alarm battery) mounted at the holder, eliminating the need for wires across the spider. No more heat ropes! On/off sensor and LED indicator included.
Sizes available to fit all apertures
$85
Made from 100% ripstop nylon tent fabric - not cheap cotton T-shirt fabric like most others.
Includes custom Nylon stuff sack.
Ripstop Nylon light shroud
$199 for 12.5" Classic
$209 for 15" Classic and 15" UC
$219 for 18" Classic and 18" UC
$249 for 20" Classic
$259 for 22" UC
$275 for 25" Classic
Counterweight kit
Recommended if you intend to use heavy barlow/eyepiece combinations, a Paracorr coma corrector, a traditional finderscope, or the Nexus Pro digital setting circles.
(you supply the lead shot or sand)
$35
Filter Slides
Great filter slides for the Obsession series. No more hassle threading and unthreading filters to your various eyepieces or Paracorr. O-3, UHC, H-beta filters all on one slide for the ultimate deep sky viewing.
"The Dobsonian Telescope"
A Practical Manual for Building Large Aperture Telescopes
by Dave Kriege and Richard Berry.
179 photos, 88 drawings, 34 tables, 475 pages, Hardbound, 6" x 9".
Willmann-Bell Publishing
Whether you've never observed before, or whether you've been an amateur astronomer all your life, you will benefit from the hands on familiarity and experience in amateur astronomy and telescope making that the authors bring to this book.
